Envelop



UNITED STATES PATENT OFFICE.

ELBERT V. D. ROUSSEAU, OF BOUND BROOK, NEW JERSEY.

ENVlELOP.

SPECIFICATION forming part of Letters Patent No. 604,419, dated May 24,1898.

Application filed July 16, 1897. Serial No. 644,843. (No model.)

To all whom it may concern.-

Be it known that I, ELBERT V. D. ROUS- SEAU, a citizen of the UnitedStates, residing at Bound Brook, in the county of Somerset and State ofNew Jersey, have invented certain new and useful Improvements inEnvelops, of which the following is a full and complete specification,such as will enable those skilled in the art to which it appertains tomake and use the same.

This invention relates to envelops; and the object thereof is to providean improved device of this class which may be sealed without the use ofmucilage, the sealing devices being mechanical, a further object beingto provide an envelop of this class which is particularly adapted foruse in sending circulars and similar documents through the mail.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which Figure 1 is a backview of an envelop made according to my invention, the flap of theenvelop being open; and Fig. 2, a similar view showing the envelopsealed.

In the drawings forming part of this specification the separate parts ofmy improvement are designated by the same numerals of reference in eachof the views, and in the practice of my invention I provide an envelopof the usual form which is provided with a flap A, end pieces B, whichare folded inwardly in the usual manner, and a folding side D. The flapA is provided centrally with a tongue (1, in which is formed atransverse slot a and the folding side D is provided centrally thereofwith an extension (1, and formed in said folding side transversely ofsaid extension and longitudinally of the envelop are two slits d and 01By means of this construction I-provide a central strip 01 In closing orsealing the envelop the flap A is folded over in the usual manner, andthe tongue at thereof is passed inwardly through the slit (1 and thenoutwardly through the slit CF, and the tongue ais then pulled tight, andthe projection 01 on the strip 01 is passed through the slot a asclearly shownin Fig. 2.

This device will securely hold the flap in position, and said flapcannot be conveniently opened, and the only way it can be opened at allis to pull downwardly on the tongue a until the projection 01 isreleased from the slot (1 and then by turning said projection outwardlythe tongue a may be pulled out from beneath the strip d My improvementis simple in construction and operation and perfectly adapted toaccomplish the result for which it is intended, and it will be apparentthat changes in and modifications of the construction herein describedmay be made without departing from the spirit of my invention orsacrificing its advantages.

Having fully described my invention, I claim as new and desire to secureby Letters Patent- As an improved article of manufacture, an envelopprovided with the usual folding flap on which is formed a tongue orprojection having a transverse slot therein, the back of said envelopbeing provided with two slots whereby a strip is formed, the lower sideof which is provided with a projecting tongue, the tongue on the saidflap being adapted to pass through the said slits formed in the back ofsaid envelop and the tongue formed on said strip being adapted to engagethe transverse slot formed in the tongue of the flap, substantially asand for the purpose described.

In testimony that I claim the foregoing as my invention I have signed myname, in pres- 9o ence of the subscribing witnesses, this 14th day ofJuly, 1897.

ELBERT V. D.ROUSSEAU. Witnesses:

G. GERsT, A. O. VAN BLAROOM.

